iRedAdmin-Pro-LDAP-1.6.3 (AKA iRedAdmin-Pro for OpenLDAP backend) is now available for your upgrading and purchasing, it's a bug fix release. All customers should already received an email with download link before 2012-01-12, if you didn't receive any email from iRedMail project, please help check your Spam/Junk folder first, or mail to support @ iredmail.org and ask for one.